src/threads/native/threads.h

   1 /* src/threads/native/threads.h - native threads header
   2
   3    Copyright (C) 1996-2005, 2006 R. Grafl, A. Krall, C. Kruegel,
   4    C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
   5    E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
   6    J. Wenninger, Institut f. Computersprachen - TU Wien
   7
   8    This file is part of CACAO.
   9
  10    This program is free software; you can redistribute it and/or
  11    modify it under the terms of the GNU General Public License as
  12    published by the Free Software Foundation; either version 2, or (at
  13    your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful, but
  16    WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18    General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  23    02110-1301, USA.
  24
  25    Contact: cacao@cacaojvm.org
  26
  27    Authors: Stefan Ring
  28             Edwin Steiner
  29             Christian Thalinger
  30
  31    $Id: threads.h 6228 2006-12-26 19:56:58Z twisti $
  32
  33 */
  34
  35
  36 #ifndef _THREADS_H
  37 #define _THREADS_H
  38
  39 /* forward typedefs ***********************************************************/
  40
  41 typedef struct threadobject          threadobject;
  42 typedef union  threads_table_entry_t threads_table_entry_t;
  43 typedef struct threads_table_t       threads_table_t;
  44
  45
  46 #include "config.h"
  47
  48 #include <pthread.h>
  49 #include <ucontext.h>
  50
  51 #include "vm/types.h"
  52
  53 #include "mm/memory.h"
  54 #include "native/jni.h"
  55 #include "native/include/java_lang_Thread.h"
  56 #include "vm/global.h"
  57
  58 #include "threads/native/lock.h"
  59
  60 #if defined(ENABLE_INTRP)
  61 #include "vm/jit/intrp/intrp.h"
  62 #endif
  63
  64 #if defined(__DARWIN__)
  65 # include <mach/mach.h>
  66
  67 typedef struct {
  68         pthread_mutex_t mutex;
  69         pthread_cond_t cond;
  70         int value;
  71 } sem_t;
  72
  73 #else
  74 # include <semaphore.h>
  75 #endif
  76
  77
  78 /* thread priorities **********************************************************/
  79
  80 #define MIN_PRIORITY     1
  81 #define NORM_PRIORITY    5
  82 #define MAX_PRIORITY     10
  83
  84
  85 /* current threadobject *******************************************************/
  86
  87 #if defined(HAVE___THREAD)
  88
  89 #define THREADSPECIFIC    __thread
  90 #define THREADOBJECT      threads_current_threadobject
  91
  92 extern __thread threadobject *threads_current_threadobject;
  93
  94 #else /* defined(HAVE___THREAD) */
  95
  96 #define THREADSPECIFIC
  97 #define THREADOBJECT \
  98         ((threadobject *) pthread_getspecific(threads_current_threadobject_key))
  99
 100 extern pthread_key_t threads_current_threadobject_key;
 101
 102 #endif /* defined(HAVE___THREAD) */
 103
 104
 105 /* threads_table_entry_t *******************************************************
 106
 107    An entry in the global threads table.
 108
 109 *******************************************************************************/
 110
 111 union threads_table_entry_t {
 112         threadobject       *thread;        /* an existing thread                  */
 113         ptrint              nextfree;      /* next free index                     */
 114 };
 115
 116
 117 /* threads_table_t *************************************************************
 118
 119    Struct for the global threads table.
 120
 121 *******************************************************************************/
 122
 123 struct threads_table_t {
 124         threads_table_entry_t *table;      /* the table, threads[0] is the head   */
 125                                            /* of the free list. Real entries      */
 126                                                                            /* start at threads[1].                */
 127         s4                     size;       /* current size of the table           */
 128 };
 129
 130
 131 /* threadobject ****************************************************************
 132
 133    Every java.lang.Thread object is actually an instance of this
 134    structure.
 135
 136 *******************************************************************************/
 137
 138 #define THREAD_FLAG_JAVA        0x01    /* a normal Java thread               */
 139 #define THREAD_FLAG_INTERNAL    0x02    /* CACAO internal thread              */
 140
 141
 142 struct threadobject {
 143         java_lang_Thread      o;            /* the java.lang.Thread object        */
 144
 145         lock_execution_env_t  ee;           /* data for the lock implementation   */
 146
 147         threadobject         *next;         /* next thread in list, or self       */
 148         threadobject         *prev;         /* prev thread in list, or self       */
 149
 150         ptrint                thinlock;     /* pre-computed thin lock value       */
 151
 152         s4                    index;        /* thread index, starting with 1      */
 153         u1                    flags;        /* flag field                         */
 154
 155         pthread_t             tid;          /* pthread id                         */
 156
 157 #if defined(__DARWIN__)
 158         mach_port_t           mach_thread;       /* Darwin thread id              */
 159 #endif
 160
 161         pthread_mutex_t       joinmutex;
 162         pthread_cond_t        joincond;
 163
 164         /* these are used for the wait/notify implementation                      */
 165         pthread_mutex_t       waitmutex;
 166         pthread_cond_t        waitcond;
 167
 168         bool                  interrupted;
 169         bool                  signaled;
 170         bool                  sleeping;
 171
 172         u1                   *pc;           /* current PC (used for profiling)    */
 173
 174         java_objectheader    *_exceptionptr;     /* current exception             */
 175         stackframeinfo       *_stackframeinfo;   /* current native stackframeinfo */
 176         localref_table       *_localref_table;   /* JNI local references          */
 177
 178 #if defined(ENABLE_INTRP)
 179         Cell                 *_global_sp;        /* stack pointer for interpreter */
 180 #endif
 181
 182         dumpinfo_t            dumpinfo;     /* dump memory info structure         */
 183 };
 184
 185
 186 /* variables ******************************************************************/
 187
 188 extern threadobject *mainthreadobj;
 189
 190
 191 /* functions ******************************************************************/
 192
 193 void threads_sem_init(sem_t *sem, bool shared, int value);
 194 void threads_sem_wait(sem_t *sem);
 195 void threads_sem_post(sem_t *sem);
 196
 197 threadobject *threads_get_current_threadobject(void);
 198
 199 void threads_preinit(void);
 200 bool threads_init(void);
 201
 202 void threads_start_thread(threadobject *thread, functionptr function);
 203
 204 void threads_set_thread_priority(pthread_t tid, int priority);
 205
 206 bool threads_attach_current_thread(JavaVMAttachArgs *vm_aargs, bool isdaemon);
 207 bool threads_detach_thread(threadobject *thread);
 208
 209 void threads_join_all_threads(void);
 210
 211 void threads_sleep(s8 millis, s4 nanos);
 212 void threads_yield(void);
 213
 214 bool threads_wait_with_timeout_relative(threadobject *t, s8 millis, s4 nanos);
 215
 216 void threads_thread_interrupt(threadobject *thread);
 217 bool threads_check_if_interrupted_and_reset(void);
 218 bool threads_thread_has_been_interrupted(threadobject *thread);
 219
 220 void threads_cast_stopworld(void);
 221 void threads_cast_startworld(void);
 222
 223 void threads_dump(void);
 224
 225 #endif /* _THREADS_H */
 226
 227
 228 /*
 229  * These are local overrides for various environment variables in Emacs.
 230  * Please do not remove this and leave it at the end of the file, where
 231  * Emacs will automagically detect them.
 232  * ---------------------------------------------------------------------
 233  * Local variables:
 234  * mode: c
 235  * indent-tabs-mode: t
 236  * c-basic-offset: 4
 237  * tab-width: 4
 238  * End:
 239  * vim:noexpandtab:sw=4:ts=4:
 240  */